Performing an experiment and data collection is just part of any science project. The data must be presented in a report. The report tells readers what your hypothesis is, the results and method used. However, such a report is inconclusive if it does not have a conclusion.
When the kernels are heated, the water inside heats up to the point where it exerts enough pressure to burst the kernel open. The soft material inside puffs up as it explodes. You can present to students a simple experiment to prove that moisture is inside popcorn kernels.
Use a test tube for this experiment.
Place one kernel of popcorn in the bottom of the tube. Cover the tube with aluminum foil and poke a few small holes in the foil. Use tongs to hold the test tube as you hold it over a lighted candle. The students should be able to see steam escape.
Where is that steam coming from? The moisture inside the kernel turns to steam. If you hold the popcorn over the candle for a few minutes, it should heat up enough to pop. The pressure builds up inside the kernel until it bursts.
The knowledge that water is inside each kernel of corn might lead students to wonder about some things Introduce the ideas below and challenge students to hypothesize what will happen and why.
Have students record their hypotheses before completing each experiment. After each experiment, have students record whether they hypothesized correctly or not.
If their hypothesis was incorrect, have them record what they learned. In each case below, students count out popcorn kernels. Using kernels enables older students to quickly and easily convert the number of kernels that pop or don't pop into percents.
Before students perform any experiments, have them first set up a control: Count out popcorn kernels. Heat oil until it begins to smoke. Add the popcorn and let it pop.
When the popping stops, count how many of the seeds popped and how many did not pop. What will happen if there is more water inside the popcorn kernels? Count popcorn kernels from the same bag used in the control experiment.
Soak the kernels in water overnight. The next day, drain off the water and pat the kernels dry. Have students hypothesize what might happen when the kernels are heated and why.
Follow the same popping procedure used in the control experiment. When the popcorn is done, count how many of the seeds popped and how many did not pop. Did the kernels with more water pop bigger or faster or better? Or was the popcorn too saturated to pop? What if the popcorn is heated at a lower temperature?
Heat the oil in the popper to a temperature of only degrees F. Did the lower temperature pop the kernels bigger or faster or better? Or did the lower temperature fail to heat the water in the popcorn kernels enough to pop them?
What if you warm the popcorn kernels before popping them? Preheat an oven to degrees F. Spread popcorn kernels on a baking sheet and preheat them for 90 minutes. Remove the kernels from the oven and allow them to cool.Citefast is a FREE APA, MLA and Chicago citation generator.
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How to Write an Outline. In this Article: Article Summary Sample Outlines Planning Your Outline Structuring Your Outline Organizing Your Ideas Finalizing Your Outline Community Q&A An outline is a great way to organize ideas and information for a speech, an essay, a novel, or a study guide based on your class notes.
An Experiment in Love: A Novel [Hilary Mantel] on urbanagricultureinitiative.com *FREE* shipping on qualifying offers. A New York Times Book Review Notable Book of the Year It was the year after Chappaquiddick. Usually, the introduction is one paragraph that explains the objectives or purpose of the lab.
In one sentence, state the hypothesis. Sometimes an introduction may contain background information, briefly summarize how the experiment was performed, state the findings of the experiment, and list the conclusions of the investigation.
Science Fair Project Ideas. Below is a list of great ideas for potential science fair projects. Pick something you're interested in and try it out for size.